Man found missing 90% of his brain defies scientific understanding - most of his skull is filled with water:
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(07)61127-1/fulltext
Standard? Not really. But there's a tutorial here: https://github.com/miykael/3dprintyourbrain
Happy to answer some questions if you have issues